# a = 10
# print(type(a))
#
# b = 0.5
# print(type(b))
#
# c = 'hello'
# print(type(c))
#
# d = "hello"
# print(type(d))
#
# print(len(d))
# e1 = "My name is 'zzc'"
# print(e1)
# e2 = 'My name is "zzc"'
# print(e2)
# f2 =''' 'my name is 'zzc'' '''
# print(f2)#'my name is '作为字符串的一部分。
# f3 = '''My 'name' is "zzc"'''
# print(f3)

a1 = 'hello'
a2 = 'world'
print(a1 + a2)

# b1 = 'hello'
# b2 = 10
# print(b1 + b2) #类型不一样不能相加

c1 = True
c2 = False
print(c1)
print(c2)